US3913889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow fence
Assignee: West Chester Chemical Co Inc
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Filing: 1973-10-11
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Granted: 1975-10-21
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Expires: 1993-10-11
Abstract
Abstract This invention has to do with a lightweight inexpensive fence or barrier used primarily to control drifting sand, snow or particulate material. Synthetic plastic sheet which may or may not be re-enforced with mesh is supported by means of a cable or the like along both top and bottom longitudinal edges. Vertical slats of synthetic material may be secured at the desired lateral spacing, or slots of various configurations may be wholly or partially cut in a sheet of synthetic plastic to provide the desired reduction in wind velocity. The slats in one embodiment may be centrally pivoted with detachable fastenings at their outer extremities to facilitate rolling up and storing.
Inventors
- 👤 William A Nugent
- 👤 William Lloyd Williams
- 👤 Hugh A Bogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:29
CPC Classifications
E; E04; E04H; E04H17/00; E04H17/02; E04H17/06; E04H17/066; E01; E01F; E01F7/00; E01F7/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A barrier fence for controlling drifting particulate material which comprises an elongated wire mesh base forming the base of the fence and a plurality of formed synthetic plastic slats fixedly positioned at right angles to the long axis of the mesh base in horizontally spaced relationship therealong and each slat is secured at a plurality of vertically spaced points by staples to one side of said mesh base.
Claim 2
Dependent Claim
68 words
A barrier fence for controlling drifting particulate material which comprises an elongated wire mesh base forming the base of the fence and a plurality of formed synthetic plastic slats fixedly positioned at right angles to the long axis of the mesh base in horizontally spaced relationship therealong and each slat is secured at a plurality of vertically spaced points by staples to one side of said mesh base.
Claim 3
Dependent Claim
18 words
A barrier fence in accordance with claim 1 in which the plastic slats are of arcuate cross section.
Claim 4
Dependent Claim
18 words
A barrier fence in accordance with claim 1 in which the plastic slats are of corrugated cross section.
References Cited (Backward Citations)
US2753156A
Cited
US3227423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |